Brunt-Vaeisaelae Frequency and Semiconvection
Abstract
A derivation of the Brunt-Väisälä frequency, valid in regions of a star where both partial ionization and a varying nuclear composition are present, is given. The final result shows that even in regions where the total ionization approximation is valid, a reduction of the Brunt-Väisälä when compared to the Ledoux criterion is necessary. Areas where this function is important are discussed, and examples are presented using different forms of equations of state.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- February 1986
- DOI:
- 10.1086/163887
- Bibcode:
- 1986ApJ...301..204P
- Keywords:
-
- Brunt-Vaisala Frequency;
- Convective Heat Transfer;
- Stellar Oscillations;
- Stellar Physics;
- Compressibility Effects;
- Gas Ionization;
- Ideal Gas;
- Stellar Models;
- Astrophysics;
- CONVECTION;
- STARS: INTERIORS;
- STARS: PULSATION